There is a 337 experienced instructor in Sallisaw OK. It is a little ways from you, but he really likes the 337. I went down there from Iowa to get all my training. I bought a 337 and had it delivered to him and then took my training in my plane down there. I needed about the same flight requirements as you noted but I did NOT have a ME rating. Went from a 1100 hours in a 172 to a 337 and loved every minute of it. Even took my check ride in my plane. Check out this posting for more info:
http://www.337skymaster.com/messages...ead.php?t=4673